Fix: Conditionally create ngl_codegen imported target only when not RELEASE_BUILD

- Added RELEASE_BUILD check to imported ngl_codegen target creation
- Prevents make errors when CodeGen is excluded from release builds
- Release scope modules don't use CODEGEN macros, so target is not needed

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/CMakeLists.txt

@@ -200,7 +200,8 @@ OPTION(BUILD_GRANTLEE "Build CodeGen SQL files using KTextTemplate parser (KF6::
 
 # If BUILD_GRANTLEE is OFF but ngl_codegen is needed (for IDL codegen),
 # provide it as an imported executable target from pre-built location
-IF(NOT BUILD_GRANTLEE)
+# Skip this for RELEASE_BUILD since CodeGen is excluded and ngl_codegen is not needed
+IF(NOT BUILD_GRANTLEE AND NOT RELEASE_BUILD)
   # ngl_codegen is copied to build/bin/ by run_final_migration.sh
   # Create an imported target so MacroCodeGenIdl.cmake can find it
   IF(NOT TARGET ngl_codegen)